Back to EveryPatent.com
United States Patent | 5,109,442 |
Klainer ,   et al. | April 28, 1992 |
A fiber optic chemical sensor is made water repellent by attaching a plurality of long, hydrophobic chains, e.g. silane polymers, to the surface. The chains extend from the surface and form a semi-permeable barrier which repels water molecules while selectively passing analyte molecules therethrough. In one configuration, the hydrophobic chains are attached substantially uniformly over the clad. In a second configuration, the clad is a plurality of spaced stripes with the hydrophobic chains attached in the gaps between the stripes. In another configuration, a patterned hydrophobic coating of alternating thick and thin segments is formed on the clad.
Inventors: | Klainer; Stanley M. (Henderson, NV); Dandge; Dileep K. (Henderson, NV); Goswami; Kisholoy (Henderson, NV) |
Assignee: | FiberChem Inc. (Las Vegas, NV) |
Appl. No.: | 501146 |
Filed: | March 28, 1990 |
Current U.S. Class: | 385/12; 210/500.25; 210/500.27; 250/227.11; 250/227.14; 252/582; 385/123; 385/145; 422/82.06; 422/82.07; 422/82.11; 427/163.2; 600/342 |
Intern'l Class: | G02B 006/02; G01N 021/00; H01J 005/16; A61B 005/00 |
Field of Search: | 350/96.29,96.30,96.34,96.15,320,96.33 356/39,42 422/68.1,82.05,82.06,82.08,82.11 128/634,636,637 250/227.11,227.14 427/163 252/582,586,589 210/500.21,500.27,500.25,500.35,500.36,505,506 |
4682895 | Jul., 1987 | Costello | 350/96. |
4842783 | Jun., 1989 | Blaylock | 264/1. |
4913519 | Apr., 1990 | Klainer et al. | 350/96. |
4919891 | Apr., 1990 | Yafuso et al. | 422/58. |
4925268 | May., 1990 | Iyer et al. | 350/96. |
4929049 | May., 1990 | Le Goullon et al. | 350/96. |
4950405 | Aug., 1990 | Miyasaka et al. | 210/500. |
4974929 | Dec., 1990 | Curry | 350/96. |
4999306 | Mar., 1991 | Yafuso et al. | 350/96. |
5026139 | Jun., 1991 | Klainer et al. | 350/96. |
5028395 | Jul., 1991 | Sebille et al. | 350/96. |
5036194 | Jul., 1991 | Hazel | 350/96. |